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Date:: Thu Jul 15 10:37:17 2021 UTC
Message:: actually bind t to toc
Actions:: History | Blame | Raw File
1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <curses.h>
18 #include <limits.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <unistd.h>
22 
23 #include "defaults.h"
24 #include "telescope.h"
25 #include "ui.h"
26 
27 char *new_tab_url = NULL;
28 int fill_column = 80;
29 int olivetti_mode = 1;
30 int enable_colors = 1;
31 int hide_pre_context = 0;
32 int hide_pre_blocks = 0;
33 
34 struct lineprefix line_prefixes[] = {
35 	[LINE_TEXT] =		{ "",		"" },
36 	[LINE_LINK] =		{ "=> ",	"   " },
37 	[LINE_TITLE_1] =	{ "# ",		"  " },
38 	[LINE_TITLE_2] =	{ "## ",	"   " },
39 	[LINE_TITLE_3] =	{ "### ",	"    " },
40 	[LINE_ITEM] =		{ "* ",		"  " },
41 	[LINE_QUOTE] =		{ "> ",		"  " },
42 	[LINE_PRE_START] =	{ "```",	"   " },
43 	[LINE_PRE_CONTENT] =	{ "",		"" },
44 	[LINE_PRE_END] =	{ "```",	"```" },
45 
46 	[LINE_COMPL] =		{"", ""},
47 	[LINE_COMPL_CURRENT] =	{"", ""},
48 };
49 
50 struct line_face line_faces[] = {
51 	[LINE_TEXT] =		{
52 		.prfx_pair = PT_PRFX,
53 		.pair = PT,
54 		.trail_pair = PT_TRAIL,
55 	},
56 	[LINE_LINK] =		{
57 		.prfx_pair = PL_PRFX,
58 		.pair = PL,
59 		.trail_pair = PL_TRAIL,
60 		.attr = A_UNDERLINE,
61 	},
62 	[LINE_TITLE_1] =	{
63 		.prfx_pair = PT1_PRFX,
64 		.pair = PT1,
65 		.trail_pair = PT1_TRAIL,
66 		.attr = A_BOLD,
67 	},
68 	[LINE_TITLE_2] =	{
69 		.prfx_pair = PT2_PRFX,
70 		.pair = PT2,
71 		.trail_pair = PT2_TRAIL,
72 		.attr = A_BOLD,
73 	},
74 	[LINE_TITLE_3] =	{
75 		.prfx_pair = PT3_PRFX,
76 		.pair = PT3,
77 		.trail_pair = PT3_TRAIL,
78 		.attr = A_BOLD,
79 	},
80 	[LINE_ITEM] =		{
81 		.prfx_pair = PI_PRFX,
82 		.pair = PI,
83 		.trail_pair = PI_TRAIL,
84 	},
85 	[LINE_QUOTE] =		{
86 		.prfx_pair = PQ_PRFX,
87 		.pair = PQ,
88 		.trail_pair = PQ_TRAIL,
89 		.attr = A_DIM,
90 	},
91 	[LINE_PRE_START] =	{
92 		.prfx_pair = PPSTART_PRFX,
93 		.pair = PPSTART,
94 		.trail_pair = PPSTART_TRAIL,
95 	},
96 	[LINE_PRE_CONTENT] =	{
97 		.prfx_pair = PP_PRFX,
98 		.pair = PP,
99 		.trail_pair = PP_TRAIL,
100 	},
101 	[LINE_PRE_END] =	{
102 		.prfx_pair = PPEND_PRFX,
103 		.pair = PPEND,
104 		.trail_pair = PPEND_TRAIL,
105 	},
106 
107 	/* minibuffer */
108 	[LINE_COMPL] = {
109 		.prfx_pair = PCOMPL_PRFX,
110 		.pair = PCOMPL,
111 		.trail_pair = PCOMPL_TRAIL,
112 	},
113 	[LINE_COMPL_CURRENT] = {
114 		.prfx_pair = PCOMPL_CURR_PRFX,
115 		.pair = PCOMPL_CURR,
116 		.trail_pair = PCOMPL_CURR_TRAIL,
117 		.attr = A_REVERSE,
118 		.trail_attr = A_REVERSE,
119 	},
120 };
121 
122 struct tab_face tab_face = {
123 	.bg_attr = A_REVERSE, .bg_bg = -1, .bg_fg = -1,
124 	.t_attr  = A_REVERSE, .t_bg  = -1, .t_fg  = -1,
125 	.c_attr  = A_NORMAL,  .c_bg  = -1, .c_fg  = -1,
126 
127 	/*
128 	 * set these so that even when enable-color=0 the bar has some
129 	 * sane defaults.
130 	 */
131 	.background =	A_REVERSE,
132 	.tab =		A_REVERSE,
133 	.current =	A_NORMAL,
134 };
135 
136 struct body_face body_face = {
137 	.lbg = -1, .lfg = -1,
138 	.bg  = -1, .fg  = -1,
139 	.rbg = -1, .rfg = -1,
140 };
141 
142 struct modeline_face modeline_face = {
143 	.bg  = -1,
144 	.fg  = -1,
145 	.attr = A_REVERSE,
146 };
147 
148 struct minibuffer_face minibuffer_face = {
149 	.bg = -1,
150 	.fg = -1,
151 	.attr = A_NORMAL,
152 };
153 
154 struct mapping {
155 	const char	*label;
156 	int		 linetype;
157 } mappings[] = {
158 	{"text",	LINE_TEXT},
159 	{"link",	LINE_LINK},
160 	{"title1",	LINE_TITLE_1},
161 	{"title2",	LINE_TITLE_2},
162 	{"title3",	LINE_TITLE_3},
163 	{"item",	LINE_ITEM},
164 	{"quote",	LINE_QUOTE},
165 	{"pre.start",	LINE_PRE_START},
166 	{"pre",		LINE_PRE_CONTENT},
167 	{"pre.end",	LINE_PRE_END},
168 
169 	/* minibuffer */
170 	{"compl",	LINE_COMPL},
171 	{"compl.current", LINE_COMPL_CURRENT}
172 };
173 
174 static struct mapping *
175 mapping_by_name(const char *name)
176 {
177 	size_t i;
178 
179 	for (i = 0; i < sizeof(mappings)/sizeof(mappings[0]); ++i) {
180 		if (!strcmp(name, mappings[i].label))
181 			return &mappings[i];
182 	}
183 
184 	return NULL;
185 }
186 
187 
188 static inline void
189 global_set_key(const char *key, void (*fn)(struct buffer*))
190 {
191 	if (!kmap_define_key(&global_map, key, fn))
192 		_exit(1);
193 }
194 
195 static inline void
196 minibuffer_set_key(const char *key, void (*fn)(struct buffer*))
197 {
198 	if (!kmap_define_key(&minibuffer_map, key, fn))
199 		_exit(1);
200 }
201 
202 static void
203 load_default_keys(void)
204 {
205 	/* === global map === */
206 
207 	/* emacs */
208 	global_set_key("C-p",		cmd_previous_line);
209 	global_set_key("C-n",		cmd_next_line);
210 	global_set_key("C-f",		cmd_forward_char);
211 	global_set_key("C-b",		cmd_backward_char);
212 	global_set_key("M-{",		cmd_backward_paragraph);
213 	global_set_key("M-}",		cmd_forward_paragraph);
214 	global_set_key("C-a",		cmd_move_beginning_of_line);
215 	global_set_key("C-e",		cmd_move_end_of_line);
216 
217 	global_set_key("M-v",		cmd_scroll_up);
218 	global_set_key("C-v",		cmd_scroll_down);
219 	global_set_key("M-space",	cmd_scroll_up);
220 	global_set_key("space",		cmd_scroll_down);
221 
222 	global_set_key("M-<",		cmd_beginning_of_buffer);
223 	global_set_key("M->",		cmd_end_of_buffer);
224 
225 	global_set_key("C-x C-c",	cmd_kill_telescope);
226 
227 	global_set_key("C-g",		cmd_clear_minibuf);
228 
229 	global_set_key("M-x",		cmd_execute_extended_command);
230 
231 	global_set_key("C-c {",		cmd_dec_fill_column);
232 	global_set_key("C-c }",		cmd_inc_fill_column);
233 
234 	global_set_key("C-c p",		cmd_previous_heading);
235 	global_set_key("C-c n",		cmd_next_heading);
236 
237 	global_set_key(">",		cmd_load_url);
238 	global_set_key("<",		cmd_load_current_url);
239 	global_set_key("C-x C-f",	cmd_load_url);
240 	global_set_key("C-x M-f",	cmd_load_current_url);
241 
242 	global_set_key("C-x t 0",	cmd_tab_close);
243 	global_set_key("C-x t 1",	cmd_tab_close_other);
244 	global_set_key("C-x t 2",	cmd_tab_new);
245 	global_set_key("C-x t o",	cmd_tab_next);
246 	global_set_key("C-x t O",	cmd_tab_previous);
247 	global_set_key("C-x t m",	cmd_tab_move);
248 	global_set_key("C-x t M",	cmd_tab_move_to);
249 
250 	global_set_key("B",		cmd_previous_page);
251 	global_set_key("C-M-b",		cmd_previous_page);
252 	global_set_key("F",		cmd_next_page);
253 	global_set_key("C-M-f",		cmd_next_page);
254 
255 	global_set_key("<f7> a",	cmd_bookmark_page);
256 	global_set_key("<f7> <f7>",	cmd_list_bookmarks);
257 
258 	/* vi/vi-like */
259 	global_set_key("k",		cmd_previous_line);
260 	global_set_key("j",		cmd_next_line);
261 	global_set_key("l",		cmd_forward_char);
262 	global_set_key("h",		cmd_backward_char);
263 	global_set_key("{",		cmd_backward_paragraph);
264 	global_set_key("}",		cmd_forward_paragraph);
265 	global_set_key("^",		cmd_move_beginning_of_line);
266 	global_set_key("$",		cmd_move_end_of_line);
267 
268 	global_set_key("K",		cmd_scroll_line_up);
269 	global_set_key("J",		cmd_scroll_line_down);
270 
271 	global_set_key("g g",		cmd_beginning_of_buffer);
272 	global_set_key("G",		cmd_end_of_buffer);
273 
274 	global_set_key("g D",		cmd_tab_close);
275 	global_set_key("g N",		cmd_tab_new);
276 	global_set_key("g t",		cmd_tab_next);
277 	global_set_key("g T",		cmd_tab_previous);
278 	global_set_key("g M-t",		cmd_tab_move);
279 	global_set_key("g M-T",		cmd_tab_move_to);
280 
281 	global_set_key("H",		cmd_previous_page);
282 	global_set_key("L",		cmd_next_page);
283 
284 	/* tmp */
285 	global_set_key("q",		cmd_kill_telescope);
286 
287 	global_set_key("esc",		cmd_clear_minibuf);
288 
289 	global_set_key(":",		cmd_execute_extended_command);
290 
291 	/* cua */
292 	global_set_key("<up>",		cmd_previous_line);
293 	global_set_key("<down>",	cmd_next_line);
294 	global_set_key("<right>",	cmd_forward_char);
295 	global_set_key("<left>",	cmd_backward_char);
296 	global_set_key("<prior>",	cmd_scroll_up);
297 	global_set_key("<next>",	cmd_scroll_down);
298 
299 	global_set_key("C-w",		cmd_tab_close);
300 	global_set_key("C-t",		cmd_tab_new);
301 	global_set_key("M-<prior>",	cmd_tab_previous);
302 	global_set_key("M-<next>",	cmd_tab_next);
303 
304 	global_set_key("M-<left>",	cmd_previous_page);
305 	global_set_key("M-<right>",	cmd_next_page);
306 
307 	global_set_key("<f5>",		cmd_reload_page);
308 	global_set_key("r",		cmd_reload_page);
309 
310 	/* "ncurses standard" */
311 	global_set_key("C-l",		cmd_redraw);
312 
313 	/* global */
314 	global_set_key("<f1>",		cmd_toggle_help);
315 	global_set_key("C-m",		cmd_push_button);
316 	global_set_key("M-enter",	cmd_push_button_new_tab);
317 	global_set_key("M-tab",		cmd_previous_button);
318 	global_set_key("backtab",	cmd_previous_button);
319 	global_set_key("tab",		cmd_next_button);
320 	global_set_key("M-t",		cmd_tab_select);
321 	global_set_key("M-l",		cmd_link_select);
322 	global_set_key("M-/",		cmd_swiper);
323 	global_set_key("t",		cmd_toc);
324 
325 	/* === minibuffer map === */
326 	minibuffer_set_key("ret",		cmd_mini_complete_and_exit);
327 	minibuffer_set_key("C-g",		cmd_mini_abort);
328 	minibuffer_set_key("esc",		cmd_mini_abort);
329 	minibuffer_set_key("C-d",		cmd_mini_delete_char);
330 	minibuffer_set_key("del",		cmd_mini_delete_backward_char);
331 	minibuffer_set_key("backspace",		cmd_mini_delete_backward_char);
332 	minibuffer_set_key("C-h",		cmd_mini_delete_backward_char);
333 
334 	minibuffer_set_key("C-b",		cmd_backward_char);
335 	minibuffer_set_key("C-f",		cmd_forward_char);
336 	minibuffer_set_key("<left>",		cmd_backward_char);
337 	minibuffer_set_key("<right>",		cmd_forward_char);
338 	minibuffer_set_key("C-e",		cmd_move_end_of_line);
339 	minibuffer_set_key("C-a",		cmd_move_beginning_of_line);
340 	minibuffer_set_key("<end>",		cmd_move_end_of_line);
341 	minibuffer_set_key("<home>",		cmd_move_beginning_of_line);
342 	minibuffer_set_key("C-k",		cmd_mini_kill_line);
343 
344 	minibuffer_set_key("M-p",		cmd_mini_previous_history_element);
345 	minibuffer_set_key("M-n",		cmd_mini_next_history_element);
346 
347 	minibuffer_set_key("C-p",		cmd_previous_completion);
348 	minibuffer_set_key("C-n",		cmd_next_completion);
349 	minibuffer_set_key("<up>",		cmd_previous_completion);
350 	minibuffer_set_key("<down>",		cmd_next_completion);
351 
352 	minibuffer_set_key("tab",		cmd_insert_current_candidate);
353 }
354 
355 void
356 config_init(void)
357 {
358 	struct line_face *f;
359 	size_t i, len;
360 
361 	len = sizeof(line_faces)/sizeof(line_faces[0]);
362 	for (i = 0; i < len; ++i) {
363 		f = &line_faces[i];
364 
365 		f->prfx_bg = f->bg = f->trail_bg = -1;
366 		f->prfx_fg = f->fg = f->trail_fg = -1;
367 	}
368 
369 	line_faces[LINE_LINK].fg = COLOR_BLUE;
370 
371 	load_default_keys();
372 }
373 
374 int
375 config_setprfx(const char *name, const char *prfx, const char *cont)
376 {
377 	struct lineprefix *p;
378 	struct mapping *m;
379 
380 	if (!has_prefix(name, "line."))
381 		return 0;
382 	name += 5;
383 
384 	if ((m = mapping_by_name(name)) == NULL)
385 		return 0;
386 
387 	p = &line_prefixes[m->linetype];
388 	p->prfx1 = prfx;
389 	p->prfx2 = cont;
390 
391 	return 1;
392 }
393 
394 int
395 config_setvari(const char *var, int val)
396 {
397 	if (!strcmp(var, "fill-column")) {
398 		if ((fill_column = val) <= 0)
399 			fill_column = INT_MAX;
400 	} else if (!strcmp(var, "olivetti-mode")) {
401 		olivetti_mode = !!val;
402 	} else if (!strcmp(var, "enable-colors")) {
403 		enable_colors = !!val;
404 	} else if (!strcmp(var, "hide-pre-context")) {
405 		hide_pre_context = !!val;
406 	} else if (!strcmp(var, "hide-pre-blocks")) {
407 		hide_pre_blocks = !!val;
408 	} else {
409 		return 0;
410 	}
411 
412 	return 1;
413 }
414 
415 int
416 config_setvars(const char *var, char *val)
417 {
418 	if (!strcmp(var, "new-tab-url")) {
419 		if (new_tab_url != NULL)
420 			free(new_tab_url);
421 		new_tab_url = val;
422 	} else
423 		return 0;
424 	return 1;
425 }
426 
427 int
428 config_setcolor(int bg, const char *name, int prfx, int line, int trail)
429 {
430         struct mapping *m;
431 	struct line_face *f;
432 
433 	if (!strcmp(name, "tabline")) {
434 		if (bg)
435 			tab_face.bg_bg = prfx;
436 		else
437 			tab_face.bg_fg = prfx;
438 	} else if (has_prefix(name, "tabline.")) {
439 		name += 8;
440 
441 		if (!strcmp(name, "tab")) {
442 			if (bg)
443 				tab_face.t_bg = prfx;
444 			else
445 				tab_face.t_fg = prfx;
446 		} else if (!strcmp(name, "current")) {
447 			if (bg)
448 				tab_face.c_bg = prfx;
449 			else
450 				tab_face.c_fg = prfx;
451 		} else
452 			return 0;
453 	} else if (has_prefix(name, "line.")) {
454 		name += 5;
455 
456 		if ((m = mapping_by_name(name)) == NULL)
457 			return 0;
458 
459 		f = &line_faces[m->linetype];
460 
461 		if (bg) {
462 			f->prfx_bg = prfx;
463 			f->bg = line;
464 			f->trail_bg = trail;
465 		} else {
466 			f->prfx_fg = prfx;
467 			f->fg = line;
468 			f->trail_fg = trail;
469 		}
470 	} else if (!strcmp(name, "line")) {
471 		if (bg) {
472 			body_face.lbg = prfx;
473 			body_face.bg  = line;
474 			body_face.rbg = trail;
475 		} else {
476 			body_face.lfg = prfx;
477 			body_face.fg = line;
478 			body_face.rfg = trail;
479 		}
480 	} else if (!strcmp(name, "minibuffer")) {
481 		if (bg)
482 			minibuffer_face.bg = prfx;
483 		else
484 			minibuffer_face.fg = prfx;
485 	} else if (!strcmp(name, "modeline")) {
486 		if (bg)
487 			modeline_face.bg = prfx;
488 		else
489 			modeline_face.fg = prfx;
490 	} else {
491 		return 0;
492 	}
493 
494 	return 1;
495 }
496 
497 int
498 config_setattr(const char *name, int prfx, int line, int trail)
499 {
500 	struct mapping *m;
501 	struct line_face *f;
502 
503 	if (!strcmp(name, "tabline")) {
504 		tab_face.bg_attr = prfx;
505 	} else if (has_prefix(name, "tabline.")) {
506 		name += 8;
507 
508 		if (!strcmp(name, "tab"))
509 			tab_face.t_attr = prfx;
510 		else if (!strcmp(name, "current"))
511 			tab_face.c_attr = prfx;
512 		else
513 			return 0;
514 	} else if (has_prefix(name, "line.")) {
515 		name += 5;
516 
517 		if ((m = mapping_by_name(name)) == NULL)
518 			return 0;
519 
520 		f = &line_faces[m->linetype];
521 
522 		f->prfx_attr = prfx;
523 		f->attr = line;
524 		f->trail_attr = trail;
525 	} else if (!strcmp(name, "minibuffer")) {
526 		minibuffer_face.attr = prfx;
527 	} else if (!strcmp(name, "modeline")) {
528 		modeline_face.attr = prfx;
529 	} else {
530 		return 0;
531 	}
532 
533 	return 1;
534 }
535 
536 static inline void
537 tl_init_pair(int colors, int pair, int f, int b)
538 {
539 	if (f >= colors || !enable_colors)
540 		f = -1;
541 	if (b >= colors || !enable_colors)
542 		b = -1;
543 	init_pair(pair, f, b);
544 }
545 
546 void
547 config_apply_style(void)
548 {
549 	size_t i, colors, len;
550 	struct line_face *f;
551 
552 	colors = COLORS;
553 
554 	len = sizeof(line_faces)/sizeof(line_faces[0]);
555 	for (i = 0; i < len; ++i) {
556 		f = &line_faces[i];
557 
558 		tl_init_pair(colors, f->prfx_pair, f->prfx_fg, f->prfx_bg);
559 		f->prefix = COLOR_PAIR(f->prfx_pair) | f->prfx_attr;
560 
561 		tl_init_pair(colors, f->pair, f->fg, f->bg);
562 		f->text = COLOR_PAIR(f->pair) | f->attr;
563 
564 		tl_init_pair(colors, f->trail_pair, f->trail_fg, f->trail_bg);
565 		f->trail = COLOR_PAIR(f->trail_pair) | f->trail_attr;
566 	}
567 
568 	/* tab line */
569 	tl_init_pair(colors, PTL_BG, tab_face.bg_fg, tab_face.bg_bg);
570 	tab_face.background = COLOR_PAIR(PTL_BG) | tab_face.bg_attr;
571 
572 	tl_init_pair(colors, PTL_TAB, tab_face.t_fg, tab_face.t_bg);
573 	tab_face.tab = COLOR_PAIR(PTL_TAB) | tab_face.t_attr;
574 
575 	tl_init_pair(colors, PTL_CURR, tab_face.c_fg, tab_face.c_bg);
576 	tab_face.current = COLOR_PAIR(PTL_CURR) | tab_face.c_attr;
577 
578 	/* body */
579 	tl_init_pair(colors, PBODY, body_face.fg, body_face.bg);
580 	body_face.body = COLOR_PAIR(PBODY);
581 
582 	tl_init_pair(colors, PBLEFT, body_face.lfg, body_face.lbg);
583 	body_face.left = COLOR_PAIR(PBLEFT);
584 
585 	tl_init_pair(colors, PBRIGHT, body_face.rfg, body_face.rbg);
586 	body_face.right = COLOR_PAIR(PBRIGHT);
587 
588 	/* modeline */
589 	tl_init_pair(colors, PMODELINE, modeline_face.fg, modeline_face.bg);
590 	modeline_face.background = COLOR_PAIR(PMODELINE) | modeline_face.attr;
591 
592 	/* minibuffer */
593 	tl_init_pair(colors, PMINIBUF, minibuffer_face.fg, minibuffer_face.bg);
594 	minibuffer_face.background = COLOR_PAIR(PMINIBUF) | minibuffer_face.attr;
595 
596 }